floater

floater
noun
  1. a person or thing that floats, in particular
    漂浮的人(或物),尤指
    ■short for floating voter
    floating voter 的简称
    ■(informal, chiefly N. Amer.)a person who frequently changes occupation or residence
    (非正式,主北美)经常变换工作者;居无定所者
    ■(N. Amer.)a worker who is required to do a variety of tasks as the need for each arises
    (北美)(根据需要改换任务的)杂工,临时工
    ■a fishing float
    渔漂
    ■a loose particle within the eyeball which is apparent in one's field of vision
    (飞蚊症)漂浮斑纹
  2. (Brit. informal, dated)a mistake; a gaffe
    (英,非正式,旧)错误;过失
  3. (US)an insurance policy covering loss of articles without specifying a location
    (美)流动财产保险单
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